Metallic shingle



April 17, 1934. LENNEVlLLE 1,955,464

METALLIC SHINGLE Original Filed Feb. 29, 1932 I/l/ Ill/I72 Fabio/w:LEN/YELl/L 4 E Inventor y Mm Attorney .i atenteol A r. l7, 1934 UNITEDSTATES PATENT OFFICE Application February 29, 1932, Serial No. 595,909Renewed December 19, 1933 3 Claims.

My present invention relates to improvements in metallic shingles orroofing sheets, stamped or rolled, preferably from zinc, and laid on thesheathing boards of a roof, with approximately one half their length tothe weather, and the other half of lap, to insure a well sealed andweather tight roof covering. In carrying out my invention the exposed orweather-end of the shingle or sheet is fashioned approximately twice thethickness, and of greater strength, than the lap end of the shingle orsheet, and the exposed end or portion of the shingle or sheet is mademore durable by dipping or otherwise coating the shingle with lead toinsure not only a weatherproof shingle, but also to protect it againstcorrosion by acids from fumes, smoke, and other deleterious atmosphericconditions.

Rib seams are provided for the overlapping margins of the shingles orsheets to insure accuracy and convenience in laying the shingles, and toassure weathertight joints that are closed or sealed against drivingrain or snow, and Wind, and air spaces or cells are provided between thelapped portions of the shingles for venting purposes.

In their preferred size the roofing sheets are of greater dimensionsthan the standard shingle, and the sheets, which may be nailed throughtheir thin portions or lapped ends, may be laid with facility, and theroof covered in comparatively short time with slight expenditure of timeand labor.

The invention consists in certain novel combinations and arrangements ofparts as will hereinafter be more fully set forth and claimed. In theaccompanying drawing I have illustrated one complete example of thephysical embodiment of my invention wherein the parts are combined andarranged according to the best mode I have thus far devised for thepractical application of the principles of my invention.

Figure l is a perspective View of one of the metallic shingles orroofing sheets embodying my invention.

Figure 2 is a sectional View through a portion of a shingled roof,according to my invention.

Figure 3 is an enlarged and exaggerated sectional view through a roofingsheet showing the two thicknesses of the sheet and the lead coating forthe two sides of the weather or exposed end of the sheet.

Figure 4 is an enlarged, horizontal sectional View showing theoverlapping lateral edges or margins of two sheets.

In Figure 3 a conventionalized sectional view of a roofing sheet orshingle is shown, with the lap-end 1 of approximately one half thethickness of the exposed or weather end 2, and the latter end is dippedor otherwise coated as at 2. The roofing sheet is stamped or rolled fromzinc blanks and the blanks are cut into the desired shapes of suitablesizes, preferably larger than the standard shingle, and thenon-corrosive coating for the zinc sheet may be lead, or other suitablematerial.

The roofing sheets may be laid on a fiat roof and welded or soldered, oras in Figure 2 the slanting roof comprising the rafters R and sheathingboards S may be covered and the roofing sheets are secured by nails orotherwise.

As best seen in Figure 1 the sheets are fashioned with lateral exteriorribs 3 and 4 at 0pposite edges, which form interior grooves, and betweenthese lateral ribs are arranged parallel, intermediate ribs 5. The ribsare spaced equidistant, and extend the full length of the sheet, and asindicated the ribs taper, with their smaller ends at the free edge ofthe lap end and their larger ends at the free ends of the exposedportion of the sheet, and at both sides of the intermediate ribs, aswell as at the inner sides of the lateral ribs, exterior grooves 6 arefashioned in the sheets, and these grooves provide for interior ribs 7.Thus the sheets, not only overlap at the opposite ends, but they overlapat their lateral edges, when laid on the roof structure, and as seen inFigure 4, the lateral edge or tapering rib 3 fits over the outer one ofthe intermediate ribs, and the lateral edge or rib 4 is covered byanother of the outer ribs of the intermediate series 5. In other wordsthe sheets or shingles overlap approximately one half of their length,and at their lateral edges the sheets overlap the distance between alateral rib and the adjoining intermediate rib.

The lateral ribs and their complementary intermediate ribs form thespaced rib-seams in the roof, and the double sealing of the lateraledges of the sheets as in Figure 4 insures a weather tight joint that isimpervious to wind, water, or snow. The exterior grooves 6 providelongitudinal drains for carrying off rain water and, as best seen inFigure 1 these grooves start at the approximate transverse center lineof the sheets and extend to the lower extremity of the exposed end ofthe sheet. The grooves 6, and the complementary ribs 7 start at zero andflare or taper outwardly toward the free edge of exposed edge of thesheet, and these inverted ribs 7 thus provide a covering for the lateralribs 3 and 4 of complementary sheets, as well as form drains for theexterior faces of the sheets.

As best seen in Figure 1 each sheet is provided with a rounded edge orhalf-rib 8, which extends across the full width of the sheet, but mergeswith the intercepting lateral and intermediate grooves. These roundededges or half-ribs fit over complementary transverse ribs 9, located atthe approximate centers of the sheets, and these intermediate,transverse, ribs also extend the full width of the sheets and interceptthe longitudinal ribs 3, 4, and 5 of the sheets. The function of thecomplementary half ribs 8 and ribs 9 is to seal the horizontallyextending joints, and form rib-seams in the roof for the exclusion ofwind, rain, or snow, as indicated in Figure 2.

Between the overlapping portions of the sheets, as seen in Figure 2, airspaces or cells 10 are formed for venting purposes and to preventaccumulation of dampness within the roof covering. The sheets, which arefashioned of comparatively light-weight material are strengthened by theuse of the longitudinal and cross ribs, and as a consequence thestrength and durability of a heavy roof are provided with acomparatively light load on the roof structure, and a well sealed andweather-tight roof covering is insured.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:-

of the sheet.

3. A rectangular roofing sheet of metal having a lap end and an exposedend of varying thickness, lateral grooved beads and intermediate, spacedgrooved-beads, an intermediate transverse intercepting bead forming aseam groove, a seam groove at the edge of the exposed end, said lateraland spaced intermediate beads increasing in cross area from the upperedge of the lap end to the lower edge of the exposed end of the sheet,and inverted beads forming exterior grooves of increasing cross areafrom the transverse intercepting head to the lower edge of the exposedend of the sheet.

FREDRIC

